Security update for ntp

Announcement ID: SUSE-SU-2016:1278-1
Rating: important
References:
Cross-References:
CVSS scores:
  • CVE-2015-7704 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • CVE-2015-7705 ( NVD ): 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • CVE-2015-7974 ( NVD ): 7.7 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
  • CVE-2016-1547 ( NVD ): 5.3 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  • CVE-2016-1548 ( NVD ): 7.2 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L
  • CVE-2016-1549 ( NVD ): 6.5 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
  • CVE-2016-1550 ( NVD ): 5.3 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
  • CVE-2016-1551 ( NVD ): 3.7 CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
  • CVE-2016-2516 ( NVD ): 5.3 CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
  • CVE-2016-2517 ( NVD ): 5.3 CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
  • CVE-2016-2518 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  • CVE-2016-2518 ( NVD ): 5.3 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  • CVE-2016-2519 ( NVD ): 5.9 CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products:
  • SLES for SAP Applications 11-SP4
  • SUSE Linux Enterprise Server 11 SP4

An update that solves 12 vulnerabilities can now be installed.

Description:

This update for ntp to 4.2.8p7 fixes the following issues:

  • CVE-2016-1547, bsc#977459: Validate crypto-NAKs, AKA: CRYPTO-NAK DoS.
  • CVE-2016-1548, bsc#977461: Interleave-pivot
  • CVE-2016-1549, bsc#977451: Sybil vulnerability: ephemeral association attack.
  • CVE-2016-1550, bsc#977464: Improve NTP security against buffer comparison timing attacks.
  • CVE-2016-1551, bsc#977450: Refclock impersonation vulnerability
  • CVE-2016-2516, bsc#977452: Duplicate IPs on unconfig directives will cause an assertion botch in ntpd.
  • CVE-2016-2517, bsc#977455: remote configuration trustedkey/ requestkey/controlkey values are not properly validated.
  • CVE-2016-2518, bsc#977457: Crafted addpeer with hmode > 7 causes array wraparound with MATCH_ASSOC.
  • CVE-2016-2519, bsc#977458: ctl_getitem() return value not always checked.
  • This update also improves the fixes for: CVE-2015-7704, CVE-2015-7705, CVE-2015-7974

Bugs fixed: - Restrict the parser in the startup script to the first occurrance of "keys" and "controlkey" in ntp.conf (bsc#957226).

Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:

  • SUSE Linux Enterprise Server 11 SP4
    zypper in -t patch slessp4-ntp-12553=1
  • SLES for SAP Applications 11-SP4
    zypper in -t patch slessp4-ntp-12553=1

Package List:

  • SUSE Linux Enterprise Server 11 SP4 (s390x x86_64 i586 ppc64 ia64)
    • ntp-doc-4.2.8p7-11.1
    • ntp-4.2.8p7-11.1
  • SLES for SAP Applications 11-SP4 (ppc64 x86_64)
    • ntp-doc-4.2.8p7-11.1
    • ntp-4.2.8p7-11.1

References: